Sera gH-Test 15 ml, 0.5 fl.oz. Aquarium Test Kits
Makes it easy to monitor the total hardness
Easy to read
For approx. 420°dGH. In case of too low GH values we advocate sera mineral salt. Excessive whole hardness ranges could be lowered by mixing in R/O water. For creating tender water we advocate including sera Blackwater aqua tan or filtering by sera tremendous peat.
Makes it simple to watch the overall hardness
Straightforward to learn
Specification: Sera gH-Test 15 ml, 0.5 fl.oz. Aquarium Test Kits